我是高中生，求帮忙想一个英语free talk 演讲的主题，讲什么好呢？请大家帮忙想一个话题。

Everyone has a lot of dreams.Some people want to be rich,dreaming of becoming millionaires overnight.Others want to be famous,dreaming of suddenly jumping to great fame.I have a lot of dreams,too.When I was a young girl,I dreamed of becoming a scientist like Hua Luogen in future.However,I knew very well that I could not succeed without painstaking efforts.So I studied hard in the middle school and college in order to attain my goal.After graduating from college,I found a job as a teacher.Although I was very busy with teaching,I never gave up my goal.I read a lot of books to get more knowledge